package com.jm.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.jm.reggie.common.R;
import com.jm.reggie.entity.Employee;
import com.jm.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeServiceController {
    @Resource
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1、 将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> wrapper=new LambdaQueryWrapper<>();
        wrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(wrapper);

        //3、如果没有查询到则返回用户名不正确
        if(emp==null){
            return R.error("用户名不正确");
        }

        //4、密码比对，如果不一致则返回密码错误
        if(!password.equals(emp.getPassword())){
            return R.error("密码错误");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("员工账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("logout")
    public R<String> logout(HttpServletRequest request){
        //销毁 session
        request.getSession().invalidate();
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @param request
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee,HttpServletRequest request){
        //初始密码：123456 进行MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("page")
    public R<Page> page(Integer page,Integer pageSize,String name){
        //分页构造器
        Page<Employee> pageInfo=new Page<>(page,pageSize);
        //条件构造器
        LambdaQueryWrapper<Employee> wrapper=new LambdaQueryWrapper<>();
        //过滤条件
        wrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //排序条件
        wrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,wrapper);
        return R.success(pageInfo);
    }

    /**
     * 修改员工信息
     * @param employee
     * @param request
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee,HttpServletRequest request){
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }

    /**
     * 查询员工信息
     * @param id
     * @return
     */
    @GetMapping("{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if(employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

}
